2. This also intersects with copyright law. Ingesting content to your servers en masse through automation and transforming it there is not the same as giving people a tool (like Safari Reader) they can run on their client for specific sites they visit. Examples of companies that lost court cases about this:
Aereo, Inc. v. American Broadcasting Companies (2014)
TVEyes, Inc. v. Fox News Network, LLC (2018)
UMG Recordings, Inc. v. MP3.com, Inc. (2000)
Capitol Records, LLC v. ReDigi Inc. (2018)
Cartoon Network v. CSC Holdings (Cablevision) (2008)
Image Search Engines: Perfect 10 v. Google (2007)
That last one is very instructive. Caching thumbnails and previews may be OK. The rest is not. AMP is in a copyright grey area, because publishers choose to make their content available for AMP companies to redisplay. (@tptacek may have more on this)3. Putting copyright law aside, that's the point. Decentralization vs Centralization. If a bunch of people want to come eat at an all-you-can-eat buffet, they can, because we know they have limited appetites. If you bring a giant truck and load up all the food from all all-you-can-eat buffets in the city, that's not OK, even if you later give the food away to homeless people for free. You're going to bankrupt the restaurants! https://xkcd.com/1499/
So no. The difference is that people have come to expect "free" for everything, and this is how we got into ad-supported platforms that dominate our lives.